Francis j



F. J. EVANS.

PUMP.

APPLICATION FILED APR. 8. m9.

1,8?12,552, Patenmd Nov. 25, 191.9.

Mai

(Juvenile z flan 6/; ZZZ 275 runners J. EVANS,VOF BURBANK, wes nnvsron.

PUMP.

Application filed April 8,

' Burbank, in the county of lVallaWValla and I foreign matters.

Statefof Washington, have invented certain new and usefulImprovements 1n Pumps, of

which the'following is a specification.

My present invention relates to improvements in pumps of that type employing valved pistons or plungers, with means for reciprocating the piston, and the pump is especially adapted, by the employment of an auxiliary or additional valve mechanism,

for. use inirrigatio'n work where the Water to be pumped s usually accompanied by. the presence of sand, s01l weeds and other The primary object of the invention is the provision of a pumping mechanism especially adapted to overcome the. diliiculties of these conditions by constituting the valve device automatically.self-cleaning, and the valve of the piston self-seating notwithstanding the presence offorcign matters in the valve seat of the piston or plunger of the pump, and further, by the use oif'the auxiliary or gate valve, when not in use, all foreign matters are excluded from the valve of the piston thus preventing clogging of the parts. In addition the pumping and efficient in the operation of litting'the column of water to'be disposed as desired.

In' the accompanying drawings have illustrated one complete example of the physical embodiment of my invention con.-

structed and arranged according to the best mode I have so far devised for the practical application of the principlesof my invention', andwhile-I have referred to the pump as designed especially for overcoming the difiiculties attendantupon the pumping operations in irrigation, it will. readily be apparent that the mechanism is equally applicable'for other numerous uses.

Figu e l is'aview in elevation of the pumping mechanism, parts being broken away for. convenience of illustration.

Fig. 2 is an enlarged, sectional, detail .view at the-lower end of the pump cylinder showing the piston valve and the gate valves both in section.

Fig. 3 is a view at the pump head. 7

,Fig. 4 is a detail view-showing the auxiliary pump valve lever and connections.

-Fig. 5 is an edge view of the auxiliary Specification of Letters Patent.

valve lever showing also the main pistonvalve link in section. As illustrated in the. drawings, the pre ferred form of the invention involves the use ot a comparatively large cylinder 1 approximately eight, ten, or twelve inches in diameter a'ndof suitable or required length and provided with the usual spout at the l coupling l, through which. the water is to be lifted by the reciprocating, valved piston 2, operating near the lower end of the cylinder, which of course is'placed in theriver, Well, or other place from which water is to be pumped. v

I The valved piston is of special construe tion and comprises a metallic barrel 3 about which are-clamped a sufficient number or? Y packing'rmgs or gaskets l, the clamping nut 5 serving" to hold the gaskets or r11 Y mechanism is compactly arranged, durabl 'finitial movement of the valve is permitted,

At its upper end, the cylinder is provided with the-usual screw cap 12- and pacljng nut 18. for the plunger rod or stem 8, and

the latter is operated, either by mechanical power, or manually, but preferably the former, as here illustrated, when the beam or pump lever 14 is actuated. This beam or lever has a suitable fulcrum, and is con. nected to the plunger or plston rod through the instrun'lentality of the link 15 formedv by two straps as shown and pivoted. to tne stem at 16 and to the lever at 16'.

, The operation of the valved piston will be apparent from an inspection oi the drawings. and it will suffice to say that as the .piston descends the valve plug 7 is open from its seat and the limit bar icev 9 is seated at tho top of the barrel 1 through the chamber 01 buvrol of the pistoo and so up through tho cyliiuler.

The tapered construction oi the valve plug and, the complomeutmy ioymation oi? the valve seat insures an automatic and cow .veci; seating of the valve plug, and the foreign matter, such \e." sand, gravel, soil 01 other sediment at tlle bottom of the river entering through the valve'jeoat' will be retained in the barrel of the piston-and forced out on the next dovxnwzn'al stroke of the pump, the plug being in open position to permit of foreign matter preventing; clogging of parts with consequent difficulties.

'ln conjunction with the reciprocating valved piston or plunger 1 utilize a gate valve 17 to close the lower end or inlet {331d of cylinder 1, on the down stroke of the piston the valve being hinged at E8 to the cylinder, to swing from vlosod to open porsitum and vice versa in tiiroper and 'prodetev-- minod oo-mttion with the movement of the piston or plunger 2 within the cylinder.

valve 1? is nwnipulzitetl through the action of the piston actuu Pg mwzhzmism 21ml thereforeis provided with a. connecting rod 19 and actuating lever 20 the lnttenbeing govemiml and operated by the movement of tile piston link 15 as reciprocates vortically with the movei'u of the piston. The lovefQG is supported on fill-5 bracket 21 in suitable manner to the cylinder or cylinder head 12 and to compensate for an osoillutoa on the part of the link 15 in its movement, the lever is slotted l? its fol-- ovum s1: govt or pivot 22., the slot indicated :vtQi-l and 2% is a spring connected at one end of the lever and attached to the bucket 21, with a tendency to pull on the lever and pormit the QfllCG valve to swing open. But the gutevzilvo is directly operated by engagou'ient of the lover and link through the valley 25 on the end of the low! 20, the and of the lever with its roller projecting between the two straps of the l nk 15, the anti-friction roller 26 between the two straps the link, and the abutments OX stops 2? that project from opposite sides of the lover prevent its"uziclesirecl pro ectlon through the link 'iiiae oo-action between the piston link and the actuating lever for the gate valve is illustrated in full and dotted lines in drawing, although the piston valve and valve operate synchronously, they do not open extol close simultaneously. The gate Volvo not opened until the piston has reached; nearly the owl of its (low stroke and is near the bottom of the cylioler oi shamlser,

l hel'i however and it should be umlez'stoozl thattlie lever 20 is released the spring immediately pul the short or outer arm of the lover, to pm or free 211 at about z iglit angles to the link mug l valve at about. 7o the no the l out u'zotioii ztOfi'iQlfitGd on up or vi'oitlzuig stroke of the t I .h'i t 1 "1 the rollers 2'4" traveling zvloiilgltho ea es (If ill: liult straps omisetlio love]? to be 52111115; to i v in dotted lines lB-igl l tlmselongating'the outer or shorter arm of the lever givi; it longer sweeping motion, so that (is soon.

down stroke th llllli strikes a oon'umi'utively longer a a thus quickly open of Waite-1' the 3 the i to olose tho the ingiess 7 as" Tine slot.-

in level." pemzits this olmngge of lovele'ege by 'Wl icl the quick, but aotiozz out closing of valve is aceompiioiied, and tho slot stn re also 7 proper moven'lent of to 11 ee mo; the lever in its relation .56 the lint; that when the gate valve is closed the s so arranged ole smelysliort .ovfides shot omore, voile the inner oi lever, because of ti slot, is made exto t 'ie cxtien'nty of h roller 1. point of the lever x aooominodaui in mov In in elot o all me sm les oi the lever ement. 25 travels bellxe volle f the link, 52ml 216% as hook to ou e the roliew' 26 5"8 F M g I 1, tw former reap-nes- 2L pomt on the ot the o. the rollers s; sing to pull down. oi; LllQ onto short- /toon. the Milli on up or w nking stroke, the roller 15 011 the lower side of the lever until the former rolls around the roller 25 at the extreme end of the lip-stroke,

position to be displeased on the :1 stroke, ll liwt claim is-- it. The combination. in) a pump with its cylinder and reciprocating val v o 0 62? and. actuating mechanism controlled by the movei'nent of the pistonv for opening the oi: with the longer reams outivmvl yosition, as:

arm to swing the lover,

timev entl of the provided. at t! h, Elli Phil), fulcrum,

arm lever vecl piston, at a hinged valve at the lower end of the cvlin- M The combination of a pump with its (table lever and connections-eon movemeot of the pietogz I01- 13$ opening and closing said hinged valve as described,

3. The combination in a reciprocating pinup with e reciprocating link, of a hingec valve, a slotted shiftnblo springpressed lever and 2t valve rod connecting said lover and hinged valve, the end of the lever engaging said link ontrolling the open ing and closing of the hinged 'i.*z11-;e.

The combination in a reciprocating pump with a reciprocating link, of a hinged valve, a slotted, shiftable, spring pressed lever and a rod connecting said leyer and hinged valve, anti-frietion rollers on the' lever and link and said lever engage the link to hold the hinged Valve" closed, and to be released therefrom for opening the hinged Valve.

In testimony whereof I eflix my signature.

FRANCIS J. EVANS.

adapted to 15 V 

